Ergodyne N-Ferno Full Foot Warmer Pack

Foot Warming Packs: Self-contained packs activate when exposed to air. Provides warming to full foot and will fit in shoes or boots.
Features
To activate, just open the pack
All natural ingredients heat up when they contact oxygen
Foot style warms up to 7 hours
Application
Construction
Freight/Baggage
Drilling/Mining
Oil/Gas Refining
Iron/Steel Work
Delivery/Service
Landscaping/Grounds
Cold Storage/Warehousing
Material Handling